Scouring chamber for metal-scouring machines



prn s, 1930 C. A. DREISBACH scoURING CHAMBER FOB METAL SCOURINGMAGHINESFiled March 25, 192s 2 sheets-sneer l PIil 8? 1930@ c. A. DREISBCH1,753,883

SCOURING CHAMBER FOR METAL SCOVURING MACHINES Filed March 25, w29 2sheets-sheet 2 Nin-W Patented Apr. 8, 1,930

i UNITED STATES PATENT OFFICE SCOURING CHAMBER FOR METAL-SCOURING-MACHINES Application led Narch p, 1929. Serial No. 349,701.

This invention relates to an improvement interposed between theiropposite side-edges,

in scouring-chambers and particularly to scouring-chambers forlmetal-scouring and similar machines designed for scouring the surfacesof metal strips, sheets, and wire which are fed long itudinallyl throughthe scouring-chamber thereof. v,

rlhe object of this invention is to provide a simple and eiectivescouring-chamber of the type referred to and constructed with particularreference to insuring the repeated impact of the sand or other abrasivematerial against the metal to be scoured.

`With the above object in View, my invention consists in ascouring-chambercharacterized by itsprovision with a plurality ofinclined abrasive-deecting surfaces arranged to deect the sand or otherabrasive material blown therethrough against the surface of the work. Myinvention further consists in a scouringchamber characterized as aboveand having certain details of construction and combinations of parts aswill be hereinafter described andfparticularly recited in the claims.

1n the accompanying drawings:

Fig. 1 is a view in side elevation showing my improved scouring-chamberinstalled 1n a metal-scouring machine which is broken away and shownpartly in section;

Fig. 2 is a top or plan View thereof; v

Fig. 3 is a broken enlarged-scale longitudlnal sectional view taken onthe line 3 3 of Fig. 2;

Fig. 4 is an enlarged-scale transverse sectional view taken on the line4-4 of Fig. l

Fig. 5 is a detached perspective view of one of the two correspondingscouring-chamber plates which make up the scouring-chamber.

In carrying out my invention I employ two corresponding reversely turnedscouringchamber lplates 10 and 11, the inner face of each of which is ofundulating form to provide inclined abrasive-deflecting surfaces 12which act to deflect sand or other abrasive material toward thecomplementary plate and hence toward the respective opposite surfacesnally through a scouring-passage 14 formed between the upper and lowerplates 10 and 11 by spacing them apart by means of gaskets 15 as clearlyshown in Fig. 4 of the drawings.

The lower scouring-chamber platell rests upon a plurality oftransverse-bars 16, each of which is supported at its respectiveopposlte ends in tie-bars 17 located upon the respective opposite sidesof the scouring-chamber plates and secured by bolts 18 to the sandsupplychamber 19 and the oppositely-located sand-receiving chamber 20. In linewith the opposite ends of the supporting-bars I16, each of the tie-bars17 have secured to them upstanding brackets 21 havingknuckle-like upperterminals 22 receiving the ends of transverse clamping-bars 23, one ofwhich is located directly over each of the supporting- S A. DREISBACH,OF NEW RAVEN, CONNECTICUT, ASSIGNOR TO STANDARD RADIAL BLASTCORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK bars 16aforesaid and secured at its opposite l tuall7 prevent the escape ofabrasive material.

By removing one of the pins 24 the clampingbar 23 may be swung, upwardand outward upon the opposite pin so as to permit the ready removal ofthe said scouring-chamber plates 10 and 11. v

The` inlet end of the scouringpassage 14 formed between the inner facesof the upper and lower scouring-chamber plates 10 and 11, registers withan opening 27 in a rectangular gasket 28, against which the adjacentends of vthe said plates 10 and 11 abut. The said gasket also bearsagainst the forward face of an -inlet-head comprising vtwo correspondinghead-castings 29--29, each of which is grooved to form between them aninlet-passage 30 registering with the' opening 27 in the gasket 28 andwith the scouring-passage 14 aforesaid.

Each of the head-castings 29 just described is provided with a flange 31bearingagainst the forward face of a rectangular gasket 32 interposedbetween the same and and the forward face33 of the sand-supply chamber19 before described.

The outlet end of the scouring-passage 14 registers with an opening 34in a. rectangular gasket 35 which is pinched between the adjacent endsof the plates 10 and 11 and the inner face of an outlet-head comprisingtwo corresponding complementary head-castings {i6-(36, each of which isgrooved and placed together to form an outlet-passage 37 registeringwith the opening 34 in the said gasket and with the scouring-passage 14aforesaidand leading into the sand-receiving chamber 20.

The rear face of the head composed of the complementary head-castings36-36 is slightly curved from top to bottom, as clearly shown in Figs.land 3, and is forced rearward toward the scouring-plates 10 and 11 by apair of vertically-arranged clampingbars 38-38 respectively located nearthe opposite side edges of the said head and bearing at their lower endsin bosses 39 and perforated at their upper ends for the reception ofbolts 40 extending therethrough and through the forward wall of thesand-receiving chamber 20.

By tightening the bolts 40 just above referred to, rearward pressure isexertedupon the head-castings 36-36 so as to tightly grip the gasket 35and compress the gasket 28 at the opposite ends of the said plates,which 1n turnwill press the flanges 31 of the inlet headcastings 29--29against the gasket 32, so as to maintan an airtight seal between thesandsupply chamber 19 and the outlet-passage 37 in the outlethead-castings 36-36.

The strip steel 13 or otherworktobescoured is drawn endwise through thescouring-passage 14 by any suitable means in the direction of the ArrowA (Fig. 3) by any approved means, while a blast of air and sand isforced y through the said passage preferably in the ,understood in tsame direction and by a mechanism not requiring descri tion herein,since it is well Ille art. As the sand is forcibly driven through thesaid scouring-passa e 14 it will be repeatedly deflected back and orthtoward the work by the deflecting-surfaces 12 formed upon the respectiveinner faces of the plates 10 and 11, with the result that the work isthoroughly scoured and cleaned of scale or said chamber.

I other coating by a single passage through the I claim:

1. A scouring-chamber for metal-scouring machines, havin ascouring-passage of undulating longitu 'nal form, whereb a granularabrasive blown through the sai passage will be repeatedly deflected'against work therein. y

2. A scouring-chamber for metal-scouring machines, having ascouring-passage, the walls of which are formed with abrasivedeiectingsurfaces inclined with respect to its longitudinal axis, whereby agranular abrasive blown through the said passa e will be repeatedlydeflected against work t erein.

3. A scouring-chamber for metal-scouring machines, composed of twocomplementary plates positioned face to face to form a scouring-passa ebetween them, the opposed faces of the sai plates being formed withabrasivedeflecting surfaces inclined with respect to the longitudinalaxis of the said passage.

4. A scouring-chamber for metal-scouring machines, composed of twocomplementary plates positioned face to face and spaced apart by aspacing-gasket to form a scouringpassage between them, the opposed facesof the said plates being formed with abrasivedeflectinfr surfacesinclined with respect J00 the longitudinal axis of the said passage.

5. A scouring-chamber for metal-scouring machines, composed of twocomplementary plates positioned face to face and spaced apart by aspacing-gasket to form a scouringpassage between them, the opposed facesof the said plates being formed with abrasivedeflecting surfacesinclined with respect to the longitudinal axis of the said passage, andclamping-means engaging both of the said plates for drawing themtogether to grip the l said gasket.

6. A scouring-chamber for metal-scouring machines, composed of twocomplementary plates positioned face to face to form a scouring-passagebetween them, the opposed faces of the said plates being formed withabrasivedeflecting surfaces inclined with respect to the longitudinalaxis of the said passage, an inlet-fitting and an outlet-fittingrespectively vengaging the opposite ends of the said complementaryplates; and means tending to force t-he said fittings toward each otherto grip the said plates therebetween.

7. A scouring-chamber for metal-scouring machines, composed of twocomplementary plates positioned face to face to form ascouring-passagebetween them, the opposed faces of the said plates beingformed with abrasivedeectin'g surfaces inclined with respect to thelongitudinal axis of the said passage, and an inlet-fitting andanoutlet-ttin respectivelyvengaging the opposite ends o the said platesand each composed of a pair of complementary members grooved on theirabutv ting faces to form a sand-passage. y In testimony whereof, I havesigned this specication.

CHARLES A. DREISBACH.

